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प्रश्न
State what a chemical formula denotes.
उत्तर
Chemical formula denotes the number of atoms of each element present in a compound.
संबंधित प्रश्न
The symbol of a metal element which is used in making thermometers is :
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
State the type of element for the following:
potassium
Give the symbol of the following element:
Boron
State the type of element for the following:
Zinc
State the type of element for the following:
Antimony
Write the chemical formula of the following:
zinc oxide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Nitrate
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Hydroxide
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
